CN114760006A

CN114760006A - Data transmission method, device, communication equipment and storage medium

Info

Publication number: CN114760006A
Application number: CN202110026522.9A
Authority: CN
Inventors: 王俊伟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2022-07-15
Anticipated expiration: 2041-01-08
Also published as: WO2022148404A1; CN114760006B

Abstract

The embodiment of the application provides a data transmission method, a data transmission device, communication equipment and a storage medium, and relates to the technical field of communication. The data transmission method comprises the following steps: determining a first number and a second number according to the length of a first field, so as to perform data transmission based on the first number and/or the second number; wherein the first field is used for indicating the channel coding Redundancy Version (RV) of a transport block; the first number is used for indicating the number of transmission blocks using a first length indication channel Redundancy Version (RV), and the second number is used for indicating the number of transmission blocks using a second length indication channel Redundancy Version (RV); the first length is distinct from the second length. The embodiment of the application solves the problem of large loss of combining gain of data HARQ retransmission in the related art.

Description

Data transmission method, device, communication equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method, an apparatus, a communication device, and a storage medium.

Background

In the fifth generation mobile communication technology (5)^thGeneration, abbreviated as 5G), in order to reduce the high-frequency subcarrier spacing scenario and reduce the new requirement for PDCCH channel detection capability, a data transmission scheme is proposed that supports one DCI to schedule multiple PDSCH/PUSCH, and each PDSCH/PUSCH transmits a different transport block TB.

In this data transmission scheme, for the PUSCH, a channel coding redundancy version RV is designed to implement incremental redundancy HARQ (hybrid automatic repeat request) transmission, however, the number of the channel coding redundancy versions RV is limited, which results in a large combining gain loss of data HARQ retransmission.

Therefore, a new data transmission scheme needs to be proposed for the PDSCH to solve the problem of large combining gain loss of data HARQ retransmission in the related art.

Disclosure of Invention

Embodiments of the present application provide a data transmission method, an apparatus, a communication device, and a storage medium, which can solve the problem of large gain loss in data HARQ retransmission and combining existing in the related art. The technical scheme is as follows:

according to an aspect of an embodiment of the present application, a data transmission method includes: determining a first number and a second number according to the length of a first field to perform data transmission based on the first number and/or the second number; wherein the first field is used for indicating the channel coding Redundancy Version (RV) of a transport block; the first number is used for indicating the number of transmission blocks using a first length indication channel Redundancy Version (RV), and the second number is used for indicating the number of transmission blocks using a second length indication channel Redundancy Version (RV); the first length is distinct from the second length.

In a possible embodiment, the determining the first number and the second number according to the length of the first field includes: determining the length of the first field and the number of actually scheduled transmission blocks; determining the first number according to the length of the first field and the number of actually scheduled transmission blocks; and determining the second quantity according to the first quantity and the number of the actually scheduled transmission blocks.

In a possible implementation manner, the determining the first number according to the length of the first field and the number of actually scheduled transport blocks includes: determining a first difference value between the length of the first field and the number of actually scheduled transmission blocks; and determining the first number according to the relation between the first difference value and the number of the actually scheduled transmission blocks.

In a possible implementation manner, the determining the first number according to the relationship between the first difference and the number of actually scheduled transport blocks includes: and if the first difference is larger than the number of the transmission blocks which are actually scheduled, taking the number of the transmission blocks which are actually scheduled as the first number.

In a possible implementation manner, the determining the first number according to the relationship between the first difference and the number of actually scheduled transport blocks includes: and if the first difference is less than or equal to the number of the actually scheduled transmission blocks, taking the first difference as the first number.

In a possible implementation, the determining the second number according to the first number and the number of actually scheduled transport blocks includes: determining a second difference between the number of actually scheduled transport blocks and the first number; taking the second difference as the second number.

In a possible implementation, the determining the second number according to the first number and the number of actually scheduled transport blocks includes: determining a second difference between the number of actually scheduled transport blocks and the first number; and determining the second quantity according to the relation between the second difference and a set value.

In a possible implementation, the determining the second quantity according to the relationship between the second difference and the set value includes: and if the second difference is larger than the set value, taking the second difference as the second quantity.

In a possible implementation, the determining the second quantity according to the relationship between the second difference and the set value includes: and if the second difference is smaller than or equal to the set value, taking the set value as the second quantity.

In one possible embodiment, the first field is included in downlink control information.

In one possible embodiment, the first field includes an RV field for indicating a channel coding redundancy version, RV, of a transport block and/or reserved bits in the downlink control information.

In one possible embodiment, the reserved bits in the downlink control information include at least reserved bits in a new data indication NDI field for indicating new data.

In one possible embodiment, the number of reserved bits in the NDI field is determined according to the number of actually scheduled transport blocks.

In one possible embodiment, the RV field and the NDI field are padded to the same field in the downlink control information.

In a possible embodiment, the first number of parameters indicating channel coding redundancy versions RV and/or the second number of parameters indicating channel coding redundancy versions RV continuously fills the first field.

In a possible embodiment, the first number of parameters indicating the channel coding redundancy version, RV, and/or the second number of parameters indicating the channel coding redundancy version, RV, non-continuously cross-fills the first field.

According to an aspect of an embodiment of the present application, a data transmission apparatus includes: a number determination module for determining a first number and a second number according to a length of a first field to perform data transmission based on the first number and/or the second number; wherein the first field is used for indicating the channel coding Redundancy Version (RV) of a transport block; the first number is used for indicating the number of transmission blocks using a first length indication channel Redundancy Version (RV), and the second number is used for indicating the number of transmission blocks using a second length indication channel Redundancy Version (RV); the first length is distinct from the second length.

In one possible implementation, the number determination module includes: a transmission block number determining unit, configured to determine the length of the first field and the number of actually scheduled transmission blocks; a first number determining unit, configured to determine the first number according to the length of the first field and the number of actually scheduled transmission blocks; and a second quantity determining unit, configured to determine the second quantity according to the first quantity and the number of actually scheduled transmission blocks.

In one possible implementation, the first number determining unit includes: a first difference determining subunit, configured to determine a first difference between the length of the first field and the number of actually scheduled transmission blocks; a first processing subunit, configured to determine the first number according to a relationship between the first difference and the number of actually scheduled transmission blocks.

In one possible implementation, the first processing subunit includes: a first response subunit, configured to, if the first difference is greater than the number of actually scheduled transmission blocks, take the number of actually scheduled transmission blocks as the first number.

In one possible implementation, the first processing subunit includes: and the second response subunit is configured to, if the first difference is smaller than or equal to the number of actually scheduled transmission blocks, take the first difference as the first number.

In one possible implementation, the second quantity determination module includes: a second difference determining unit, configured to determine a second difference between the number of actually scheduled transport blocks and the first number; a second number determination unit configured to take the second difference as the second number.

In one possible implementation, the second quantity determination module includes: a second difference determination unit, configured to determine a second difference between the number of actually scheduled transmission blocks and the first number; and the second processing unit is used for determining the second quantity according to the relationship between the second difference value and a set numerical value.

In one possible implementation, the second processing unit includes: a third response subunit, configured to, if the second difference is greater than the set value, take the second difference as the second quantity.

In one possible implementation, the second processing unit includes: a fourth response subunit, configured to take the set value as the second quantity if the second difference is smaller than or equal to the set value.

In a possible embodiment, the first number of parameters indicating the channel coding redundancy version, RV, and/or the second number of parameters indicating the channel coding redundancy version, RV, continuously fills the first field.

In a possible embodiment, the first number of parameters indicating the channel coding redundancy version, RV, and/or the second number of parameters indicating the channel coding redundancy version, RV, non-consecutively cross-fill the first field.

According to an aspect of an embodiment of the present application, a communication apparatus includes: a memory, a transceiver, and a processor; wherein the memory is to store a computer program; the transceiver is used for transceiving data under the control of the processor; the processor is configured to read the computer program in the memory and execute the data transmission method. The communication equipment at least comprises a base station and a terminal.

According to an aspect of embodiments of the present application, a storage medium has stored thereon a computer program which, when executed by a processor, implements a data transmission method as described above.

The beneficial effect that technical scheme that this application provided brought is:

in the above technical solution, based on the length of the first field for indicating the channel redundancy version RV of the transport block, a first number for indicating the number of transport blocks using the first length to indicate the channel redundancy version RV and a second number for indicating the number of transport blocks using the second length to indicate the channel redundancy version RV are determined, so as to perform data transmission based on the first number and/or the second number. Therefore, the number of the channel coding redundancy versions RV is increased through the determination of the first number and/or the second number, and the combining gain of the data HARQ retransmission is increased along with the increase of the channel coding redundancy versions RV, so that the problem of large combining gain loss of the data HARQ retransmission in the related technology is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.

FIG. 1 is a schematic illustration of an implementation environment according to the present application.

Fig. 2 is a flow chart illustrating a method of data transmission according to an example embodiment.

Fig. 3 is a flow chart illustrating another method of data transmission in accordance with an example embodiment.

Fig. 4 is a flow chart illustrating another method of data transmission according to an example embodiment.

Fig. 5 is a flow diagram of one embodiment of step 42 in the corresponding embodiment of fig. 4.

FIG. 6 is a flow chart of one embodiment of step 422 of the corresponding embodiment of FIG. 5.

FIG. 7 is a flowchart of one embodiment of step 4222 in the corresponding embodiment of FIG. 6.

Fig. 8 is a flowchart of step 423 in one embodiment in the corresponding embodiment of fig. 5.

FIG. 9 is a flowchart of one embodiment of step 4232 in the corresponding embodiment of FIG. 8.

Fig. 10 is a schematic diagram of reserved bits according to the present application.

Fig. 11 is a schematic diagram of a first field containing a first parameter and/or a second parameter according to the present application.

Fig. 12 is a flow chart illustrating another method of data transmission in accordance with an example embodiment.

Fig. 13 is a block diagram illustrating a structure of a data transmission apparatus according to an exemplary embodiment.

Fig. 14 is a block diagram illustrating another data transmission apparatus according to an example embodiment.

Fig. 15 is a block diagram illustrating a base station according to an example embodiment.

Fig. 16 is a block diagram illustrating a structure of a terminal according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" include the plural forms as well, and the plural forms "a", "an" and "the" refer to two or more, and other words of similar import, unless expressly stated otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein describes an association relationship that associates objects, meaning that there may be three relationships, e.g., A and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The following is a description and explanation of several terms involved in the present application:

DCI, which is called downlink Control Information throughout english, and chinese means downlink Control Information.

The PDCCH is called Physical downlink control channel in english, and the chinese means a Physical downlink control channel.

PDSCH is also known as Physical downlink shared channel in english, and chinese means a Physical downlink shared channel.

The PUSCH is called Physical uplink shared channel in english, and the chinese means a Physical uplink shared channel.

TB is a Transport Block in English and Chinese means Transport Block.

RV, which is called redandancy Version in english, and chinese means a channel coding Redundancy Version. In the downlink control information DCI, an RV field is included for indicating the channel coding redundancy version RV of the transport block TB.

NDI, English, is called New data indicator, and Chinese meaning is New data indicator. In the downlink control information DCI, an NDI field is included to indicate new data.

HARQ, English is called Hybrid Automatic Repeat Request, and Chinese means Hybrid Automatic Repeat Request.

IR, English, is known as Incremental redundancy, and Chinese means Incremental redundancy.

NR, English is called New radio, Chinese means New radio, in this application, the fifth generation mobile communication technology (5)^thGeneration, abbreviated as 5G).

The UE is called User Equipment in english, and the chinese meaning is User Equipment, and may also be called a User terminal, a terminal, or the like.

The length, which is used to indicate the length of the information or the length of the field, may also be understood as the number of bits or bits (bit) of the information or the field, for example, if the field a contains 8bits of data, the length/number of bits of the field a is 8bits or 8 bits.

Reserved (reserve) bits are used to indicate free unused bits or bits in the field, which may also be considered as invalid bits or invalid bits.

As described above, in the data transmission scheme of the related art, the PUSCH is limited by the number of the channel coding redundancy versions RV, which results in a large combining gain loss of the data HARQ retransmission.

First, it is explained that the channel coding redundancy version RV is used to implement incremental redundancy HARQ transmission, that is, redundancy bits generated by an encoder are divided into a plurality of groups, each channel coding redundancy version RV defines a starting point of data transmission, and the first transmission and each HARQ retransmission use different channel coding redundancy versions RV, that is, the starting points of the first transmission and each HARQ retransmission are different, so as to implement gradual accumulation of redundancy bits, thereby completing incremental redundancy HARQ transmission.

Currently, the channel coding redundancy version, RV, is indicated by the RV field in the downlink control information, DCI.

TABLE 1

TABLE 2

Bit meaning in RV field	Channel coding redundancy version RV
		00	0
01	1
		10	2
11	3

As shown in table 1, the channel coding redundancy version RV includes 0 and 1, respectively indicated by 1 bit in the RV field; as shown in table 2, the channel coding redundancy version RV includes 0, 1, 2, 3, each indicated by 2 bits in the RV field.

Theoretically, the number of the channel coding redundancy versions RV is different, and the combining gain of the data HARQ retransmission is also different, and generally, it is considered that the greater the number of the channel coding redundancy versions RV is, the greater the combining gain of the data HARQ retransmission is.

For the PUSCH, the maximum number of transport blocks TB allowed to be scheduled by one downlink control information DCI is N (for example, N ═ 8), and in each scheduling procedure, the number of actually scheduled transport blocks TB is M (M ═ N) and 1 bit is used to indicate the channel coding redundancy version RV of the transport block. That is to say, in the data transmission process, the number of the available channel coding redundancy versions RV is only 2 (0 and 1), and compared with the number of the available channel coding redundancy versions RV when using 2-bit indication, the number is 4 (0-3), the combining gain is smaller, so that the combining gain for the data HARQ retransmission is lost, and especially in the application scenario with higher channel coding rate, the performance loss is larger.

Therefore, the related art has the defect of large combining gain loss of data HARQ retransmission.

Therefore, the data transmission method, apparatus, base station, terminal and storage medium provided by the present application aim to solve the above technical problems of the related art.

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Fig. 1 is a schematic diagram of an implementation environment involved in a data transmission method. The implementation environment includes a wireless communication system 100, where the wireless communication system 100 may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS) system, a Long Term Evolution (LTE) system, an LTE frequency Division duplex (frequency Division duplex, FDD) system, an LTE Time Division Duplex (TDD) system, a long term evolution (long term evolution advanced, LTE-a) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) system, or a New Radio Network (NR) system, and the like.

The wireless communication System 100 includes a terminal 110 and a base station 130, and may further include a core network portion, such as an Evolved Packet System (EPS).

In particular, terminal 110 refers to an electronic device, a handheld device with wireless connection capability, or other processing device connected to a wireless modem, etc. that provides voice and/or data connectivity to a user, for example, terminal 110 may be a mobile terminal device, such as a mobile telephone (or referred to as a "cellular" telephone), and may also be a computer with mobile terminal equipment, such as a portable, pocket, handheld, computer-included, or vehicle-mounted mobile device. In different systems, the name of the terminal 110 may be different, and may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiated Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or other devices. The terminal 110 may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which are not limited herein.

Base station 130, acting as an access network device, may be referred to as an access point or an electronic device in an access network that communicates over the air-interface, through one or more sectors, with terminals 110, or by other names, depending on the particular application. The base station 130 may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the terminal 110 and the rest of the access network, which may include an Internet Protocol network. The base station 130 may also coordinate management of attributes for the air interface. For example, the Base Station 130 may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (Node B) in a Wide-band Code Division Multiple Access (WCDMA), an evolved Node B (eNB or e-nb) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (new generation System), a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited herein.

The base station 130 and the terminal 110 establish a wireless connection through a wireless air interface, so that the terminal 110 establishes a connection with a cell where the base station 130 is located, and the terminal 110 is also regarded as accessing the cell, thereby enabling data transmission to be realized between the terminal 110 accessing the cell and the base station 130.

For example, the base station 130 will perform data transmission related to the first number and/or the second number, or the terminal 110 will perform data reception related to the first number and/or the second number.

Referring to fig. 2, an embodiment of the present invention provides a data transmission method, which can be performed by the base station 130 in the implementation environment shown in fig. 1.

As shown in fig. 2, the method may include the steps of:

step 21, a first number is determined.

Wherein the first number is used for indicating the number of the transport TB blocks using the first length indication channel Redundancy Version (RV).

In one possible embodiment, the first length is two bits. That is, the channel coded redundancy version RV of the transport block TB is indicated using 2 bits, so that the channel coded redundancy version RV can be increased up to 4, i.e., 0, 1, 2, 3.

Regarding the determination of the first number, there are several determination methods including, but not limited to:

first, the first number is determined by a table provided by an interface protocol of the base station and the terminal, for example, as shown in table 3, after one downlink control information DCI is determined by at most a number N of transport blocks TB allowed to be scheduled and a number M of transport blocks TB actually scheduled, the base station may determine the first number by table lookup.

TABLE 3

Further, it is understood that each of the elements of table 3 are independently present, and that these elements are exemplarily listed in the same table, but do not represent that all of the elements of table 3 must be present at the same time according to what is shown in the table. The value of each element is independent of any other element in table 3. Therefore, those skilled in the art will appreciate that the values of each of the elements in table 3 are separate embodiments.

Of course, in other embodiments, other combinations of N and M exist, which are not listed in table 3, and this embodiment also does not specifically limit this.

Secondly, the first number is determined by a table configured by the base station, for example, table 3 is configured by the base station according to different N and M, as shown in table 3, after determining that one downlink control information DCI at most allows the number N of scheduled transport blocks TB and the number M of actually scheduled transport blocks TB, the base station may determine the first number by table lookup.

Thirdly, the first number is determined by the base station according to several candidate values provided by the interface protocol of the base station and the terminal, for example, the base station selects one of the several candidate values as the first number.

Fourthly, the first quantity is determined by the base station according to identifiers corresponding to a plurality of candidate values provided by an interface protocol of the base station and the terminal, for example, the base station selects one of the candidate values, the corresponding identifier is used as the first quantity to be sent to the terminal, the terminal can determine the candidate value corresponding to the identifier through table lookup, wherein the corresponding relation between the identifier stored in the table and the candidate value is determined by the interface protocol of the base station and the terminal.

Fifth, the first number is determined by an identifier configured by the base station, for example, the base station sends the identifier to the terminal as the first number, and the terminal may determine a candidate value corresponding to the identifier by looking up a table, where correspondence between the identifier and the candidate value stored in the table is determined by the base station.

Sixthly, the base station and the terminal negotiate to determine, for example, that the terminal reports an acceptable value range, and the base station selects the first number meeting the value range to notify the terminal.

Seventh, the base station determines itself, for example, the base station directly sends the first number to the terminal.

Step 22, a data transmission is performed based on the first amount.

For example, for a transport block TB transmitted on a physical downlink shared channel PDSCH, data in the transport block TB may be downlink control information DCI containing a first number of first parameters indicating a channel coding redundancy version, RV, of the transport block using a first length; the data in the transport TB may also be HARQ retransmitted based on a first number of first parameters, which is not limited herein.

Through the process, the number of the channel coding redundancy versions RV is increased through the determination of the first number, and the combining gain of the data HARQ retransmission is larger along with the increase of the channel coding redundancy versions RV, so that the problem of larger combining gain loss of the data HARQ retransmission in the related technology is solved.

Referring to fig. 3, in an embodiment of the present application, a data transmission method is provided, which can be executed by the base station 130 in the implementation environment shown in fig. 2.

As shown in fig. 3, the method may include the steps of:

in response to the determination of the first number, a second number is determined, step 31.

Wherein the second number is used for indicating the number of the transport blocks TB using the second length indication channel redundancy version RV.

The inventors have realized that increasing the bits, i.e. 1 bit to 2 bits, for indicating the channel coding redundancy version RV of the transport block TB may increase the combining gain of the data HARQ retransmission and may also cause an increase of overhead in the downlink control information DCI, which may result in that the reception performance may not meet the practical requirements of the application scenario.

To this end, in response to the determination of the first number, the base station may determine the second number such that different transport blocks TB may use both the first length indication channel coding redundancy version RV and the second length indication channel coding redundancy version RV. It can also be understood that, for each transport block TB, the information length used to indicate the channel coding redundancy version RV in the downlink control information DCI may be dynamically adjustable, either a first length or a second length, in such a way as to reduce the overhead in the downlink control information DCI.

In one possible embodiment, the second length is one bit. In one possible embodiment, the first length is two bits and the second length is one bit.

Regarding the determination of the second number, similarly to the determination of the first number, there are several determination methods including, but not limited to: the method comprises the steps of table determination provided by an interface protocol of a base station and a terminal, table determination configured by the base station, determination of a plurality of candidate values provided by the base station according to the interface protocol of the base station and the terminal, determination of identifiers corresponding to the plurality of candidate values provided by the base station according to the interface protocol of the base station and the terminal, determination of identifiers configured by the base station, negotiation determination by the base station and the terminal, self-determination by the base station and the like.

Step 32, a data transmission is performed based on the first number and/or the second number.

For example, for a transport block TB transmitted on a physical downlink shared channel PDSCH, data in the transport block TB may be downlink control information DCI including a first number of first parameters and/or a second number of second parameters, the first parameters indicating a channel coding redundancy version RV of the transport block using a first length, the second parameters indicating a channel coding redundancy version RV of the transport block using a second length; the data in the transport block TB may also be HARQ retransmitted based on the first number of first parameters and/or the second number of second parameters, which is not limited herein.

Through the above process, the information length indicated by the used channel coding redundancy versions of different transport blocks is dynamically adjustable through the determination of the first number and/or the second number, so that not only can the combining gain of data HARQ retransmission be increased, but also excessive overhead can not be generated in Downlink Control Information (DCI), and the improvement of the receiving performance is facilitated.

Referring to fig. 4, in an embodiment of the present application, a data transmission method is provided, which can be executed by the base station 130 in the implementation environment shown in fig. 2.

As shown in fig. 4, the method may include the steps of:

the first number and the second number are determined according to the length of the first field, step 42, to perform the data transmission based on the first number and/or the second number.

Wherein the first field is used for indicating the channel coding redundancy version, RV, of the transport block.

It should be noted that the first field is not limited to the RV field in the downlink control information DCI, that is, the first field is not limited to be included in the downlink control information DCI, and may also be included in the downlink data, or the first field may also be composed of the RV field in the downlink control information DCI and any reserved bits in the downlink control information DCI, for example, the reserved bits refer to reserved bits in the NDI field in the downlink control information DCI (for example, when the number of transport blocks TB allowed to be scheduled is at most 8, and the number of actually scheduled transport blocks TB is 6, the NDI field uses only 6 bits, and the remaining 8-6-2 bits are regarded as reserved), which is not limited herein.

It can be seen that, assuming that the maximum number of transport blocks TB allowed to be scheduled by one downlink control information DCI is 8bits, the number of bits in the RV field is 8bits, and the length of the first field may be 8bits or may exceed 8bits, in this way, the first number is satisfied as much as possible, thereby ensuring that the more the channel coding redundancy versions RV are.

In one possible embodiment, as shown in fig. 5, step 42 may include the steps of:

in step 421, the length of the first field and the number of actually scheduled transport blocks are determined.

The number of actually scheduled transport blocks is indicated by downlink control information DCI configured by the base station.

Step 422, determining a first number according to the length of the first field and the number of actually scheduled transport blocks.

Step 423 determines a second number based on the first number and the number of actually scheduled transport blocks.

Thus, after determining the first number and/or the second number, data transmission may be performed based on the first number and/or the second number.

The first number determination process will be described below by taking the first number determination performed by the base station as an example.

Referring to fig. 6, a possible implementation is provided in the present embodiment, and step 422 may include the following steps:

step 4221, a first difference between the length of the first field and the number of actually scheduled transport blocks is determined.

Step 4222, determining a first number according to a relationship between the first difference and the number of actually scheduled transmission blocks.

For example, assuming that the number N of transport blocks TB that one downlink control information DCI allows scheduling at most is 8, the number of bits of the RV field is 8bits, and assuming that the first field is an RV field, the length RV _ bit _ total of the first field is also 8 bits.

Meanwhile, assuming that the number M of actually scheduled transport blocks TB indicated in the downlink control information DCI is 5, the first difference is the length RV _ bit _ total of the first field — the number M of actually scheduled transport blocks TB is 8-5 or 3.

At this time, the first number M2 is 3, that is, M2 is RV _ bit _ total-M is N-M is 3.

That is, of the actually scheduled 5 transport blocks TBs, 3 transport blocks TBs may use 2 bits to indicate the channel coding redundancy version RV.

Referring to fig. 7, a possible implementation manner is provided in the embodiment of the present application, and step 4222 may include the following steps:

in step 4222a, if the first difference is greater than the number of actually scheduled transport blocks, the number of actually scheduled transport blocks is taken as the first number.

Meanwhile, assuming that the number M of actually scheduled transport blocks TB indicated in the downlink control information DCI is 2, the first difference value is the length RV _ bit _ total of the first field — the number M of actually scheduled transport blocks TB is 8-2 or 6.

At this time, the first number M2 is 6, that is, M2 ═ RV _ bit _ total-M ═ N-M ═ 6.

That is, among the actually scheduled 2 transport blocks TBs, 6 transport blocks TBs may use 2 bits to indicate the channel coding redundancy version, and it can be understood that the effective range of the actually scheduled transport blocks TBs is exceeded in this case, and therefore, the first number M2 is only the number M of the actually scheduled transport blocks TBs.

That is, the first number M2 is 2-min (M, M2) -min (2, 6).

With continued reference to fig. 7, which provides one possible implementation in the examples of the present application, step 4222 may include the following steps:

in step 4222b, if the first difference is less than or equal to the number of actually scheduled transport blocks, the first difference is taken as a first number.

In this case, the effective range of the actual scheduling of the transport block TB is not exceeded, so the first difference is the first number M2. For example, in the above example, the first number M2 is 3, that is, in the actually scheduled 5 transport blocks TB, there may be 3 transport blocks TBs using 2 bits to indicate the channel coding redundancy version RV.

Under the effect of the above embodiments, a determination manner is provided in which the base station determines the first number by itself.

The determination of the second number is described below by taking the determination of the second number by the base station itself as an example.

Referring to fig. 8, a possible implementation manner is provided in the embodiment of the present application, and step 423 may include the following steps:

step 4231, determining a second difference between the number of actually scheduled transport blocks and the first number.

Step 4232, determining a second quantity according to the relationship between the second difference and the set value.

Assuming that the number M of transport blocks TB actually scheduled is indicated as 5 in the downlink control information DCI, the first difference value is the length RV _ bit _ total of the first field — the number M of transport blocks TB actually scheduled is 8-5 or 3. That is, the first number M2 is 3, and M2 is RV _ bit _ total-M is N-M is 3.

Further, the second difference is the number M of actually scheduled transport blocks TB — the first number M2 is 5-3 or 2. That is, the second number M1 is 2, and M1 ═ M-M2 ═ 2.

That is, of the actually scheduled 5 transport blocks TBs, 3 transport blocks TBs may use 2 bits to indicate the channel coding redundancy version RV and 2 transport blocks TBs may use 1 bit to indicate the channel coding redundancy version RV.

Referring to fig. 9, a possible implementation manner is provided in the embodiment of the present application, and step 4232 may include the following steps:

in step 4232a, if the second difference is greater than the predetermined value, the second difference is taken as the second quantity M1.

The setting value may be flexibly set according to the actual requirement of the application scenario, for example, in this embodiment, the setting value is zero.

In this case, the effective range of the actual scheduling of the transport block TB is not exceeded, so the second difference is the first number M2. For example, in the above example, the first number M2 is 3, the second number M1 is 2, and of the actually scheduled 5 transport blocks TB, there may be 3 transport blocks TB using 2 bits to indicate the channel coding redundancy version RV, and 2 transport blocks TB using 1 bit to indicate the channel coding redundancy version RV.

With continued reference to fig. 9, which provides one possible implementation in the examples of the present application, step 4232 may include the following steps:

in step 4232b, if the second difference is less than or equal to the set value, the set value is used as the second quantity M1.

Assuming that the number M of actually scheduled transport blocks TB indicated in the downlink control information DCI is 2, the first difference value is the length RV _ bit _ total of the first field — the number M of actually scheduled transport blocks TB is 8-2 or 6. That is, the first number M2 is 6, and M2 is RV _ bit _ total-M is N-M is 6.

Further, the second difference is the number M of actually scheduled transport blocks TB — the first number M2 is 2-6 or-4. That is, the second amount M1 is-4, and M1 is M-M2 is-4.

It will be appreciated that in this case the effective range for the actual scheduling of the transport blocks TB is exceeded, and therefore the first number M2 can only be a set value, i.e. zero.

That is, the second number M1 is 0 ═ max (0, M1) ═ max (0, -4).

Of course, in other embodiments, if the first number M2 has exceeded the effective range of the actual scheduling of the transport block TB, the first number M2 may be constrained first, that is, the first number M2 is 2 ═ min (2,6), and then the determination of the second number M1 is performed based on the constrained first number M2, that is, the second number M1 is 0 ═ 2-2, which is not limited specifically herein.

Then, in this case, step 423 may include the steps of: a second difference between the number M of actually scheduled transport blocks TB and the first number M2 is determined as a second number M1.

With the above embodiments, a determination manner for the base station to determine the second number M1 by itself is provided.

In this process, the inventors found that, for the PUSCH, the number of transport blocks TB that one downlink control information DCI allows scheduling at most is N (for example, N ═ 8), and in each scheduling process, the number of actually scheduled transport blocks TB is M (M < ═ N) and the channel coding redundancy version RV of the transport block TB is indicated using 1-bit information. Then, in order to ensure that the information length (also referred to as the number of bits) of each downlink control information DCI is not changed, in the downlink control information DCI, the number of bits of the RV field is not changed, i.e., is fixed to the number N of transport blocks TB that are allowed to be scheduled at most by one downlink control information DCI (for example, N is 8).

That is, the number of bits of the RV field is fixed to N bits in the downlink control information DCI, regardless of whether the number M of actually scheduled transport blocks TB is equal to N. As shown in fig. 10, assuming that the number M (e.g., M-4) of the actually scheduled transport blocks TB is smaller than N (e.g., N-8), for the RV field, only the first M (4) bits are actually used, and the last N-M (8-4) bits are not used, and are regarded as reserved (reserve) bits.

Likewise, in the downlink control information DCI, there are also remaining reserved bits. The remaining reserved bits may be reserved bits in reserved fields in an interface protocol of the base station and the terminal, or may be reserved bits in remaining functional fields that occur in special cases.

For example, the functional field is an NDI field indicating whether scheduled data is new data or retransmission data using 1 bit. Similarly, in the RV field, in order to ensure that the information length (also referred to as the number of bits) of each downlink control information DCI is not changed, the number of bits of the NDI field is not changed in the downlink control information DCI, that is, the number N of transport blocks TB allowed to be scheduled at most in one downlink control information DCI is fixed (for example, N is 8). Then, when the number M of actually scheduled transport blocks TB is smaller than N, a reserved bit appears in the NDI field, as shown in fig. 10, for the NDI field, when the number M of actually scheduled transport blocks TB is 4, only the first M (4) bits are actually used, and the last N-M (8-4 ═ 4) bits are not used, and are regarded as reserved bits.

This causes a waste of radio resources to a certain extent, which is not favorable for improving the resource utilization rate.

Therefore, the inventors further propose a data transmission method, which can maximally utilize reserved bits in the downlink control information DCI, thereby maximizing the combining gain of the data HARQ retransmission without increasing the overhead in the downlink control information DCI. The data transmission method may include:

in one possible embodiment, the first field comprises an RV field in the downlink control information DCI and/or a reserved bit in the downlink control information DCI.

In one possible embodiment, the reserved bits in the downlink control information DCI include at least the reserved bits in the NDI field.

In one possible embodiment, the RV field uses all bits of the first field.

In one possible embodiment, the RV field uses the first bits of the first field and the reserved bits in the downlink control information DCI use the last bits of the first field.

In one possible embodiment, the reserved bits in the downlink control information DCI use the first bits of the first field and the RV field uses the last bits of the first field.

In one possible embodiment, the RV field and the NDI field belong to two different fields. It may also be understood that the RV field and the NDI field are padded to two different fields in the downlink control information, DCI.

In one possible embodiment, the RV field and the NDI field belong to the same field. It may also be understood that the RV field and the NDI field fill the same field in the downlink control information DCI.

In one possible embodiment, the first number M2 of first parameters and/or the second number M1 of second parameters use all bits of the RV field.

In one possible embodiment, the first number M2 of first parameters and/or the second number M1 of second parameters use reserved bits in the downlink control information DCI.

In one possible embodiment, several of the first number M2 of first parameters and/or the second number M1 of second parameters use the full bits of the RV field, and the remaining several of the second number M1 use the reserved bits in the downlink control information DCI.

In one possible embodiment, the second number M1 of second parameters and/or several of the first numbers M2 use all bits of the RV field, and the remaining several of the first numbers M2 use reserved bits in the downlink control information DCI.

In one possible implementation, the first number M2 of first parameters uses the first bits in the RV field and the second number M1 of second parameters uses the last bits in the RV field.

In one possible embodiment, the second number M1 of second parameters uses the first bits in the RV field and the first number M2 of first parameters uses the last bits in the RV field.

In a possible implementation, the first number M2 of first parameters and/or the second number M1 of second parameters consecutively fills the first field. Wherein the continuous padding mode depends on an indication of downlink control information DCI configured by the base station.

In one possible implementation, the first number M2 of first parameters and the second number M1 of second parameters do not contiguously cross-fill the first field. Wherein the discontinuous cross-padding manner depends on an indication of downlink control information DCI configured by the base station.

In one possible embodiment, the first bits in the NDI field are reserved bits for padding by the first parameter and/or the second parameter. Wherein, the bit number of the reserved bits in the NDI field is determined according to the number of the actually scheduled transmission blocks.

In one possible embodiment, the last bits in the NDI field are reserved bits for the first parameter and/or the second parameter to fill. Wherein, the bit number of the reserved bits in the NDI field is determined according to the number of the actually scheduled transmission blocks.

Of course, the filling position of each function field in the first field, the filling position of each parameter in the first field, and the filling position of the reserved bit in the first field are not limited to those described in the above embodiments, and any other suitable combination is allowed, which is not specifically limited herein.

Through the cooperation of the above embodiments, the reserved bits in the downlink control information DCI, for example, the reserved bits in the NDI field, are fully utilized, and on the premise of not increasing the overhead of the downlink control information DCI, the dynamic adjustment of the information length used by the channel coding redundancy version indication of different transport blocks is realized, which is not only beneficial to improving the resource utilization rate, but also improves the receiving performance on the premise of promoting the combining gain of the data HARQ retransmission.

Fig. 11 illustrates a schematic diagram of a first field in an application scenario containing a first number M2 of first parameters and/or a second number M1 of second parameters. The determination process of the first number M2 and/or the second number M1 in each application scenario is illustrated below with reference to fig. 11:

as shown in fig. 11a, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is an RV field for indicating a channel coding redundancy version, RV. The first parameter and the second parameter each fill all bits of the first field continuously. The second parameter uses the first bits of the first field and the first parameter uses the last bits of the first field.

Assuming that the number N of transport blocks TB that one downlink control information DCI allows scheduling at most is 8, the number of bits in the RV field is 8bits, and correspondingly, the length RV _ bit _ total of the first field is determined to be 8 bits.

Let the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI be 5.

Then, the first number M2 is equal to the length of the first field RV _ bit _ total — the number of actually scheduled transport blocks TB, M, RV _ bit _ total-M, N-M, 8-5, 3.

The second number M1 is the number M of actually scheduled transport blocks TB — the first number M2 is M- (N-M) 2M-N is 5-3 is 2.

Thus, the first number M2 of first parameters is determined as: 10. 00, 11; the second parameter of the second number M1 is determined as: 0. 1. Wherein 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 0, 1 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 1, 10 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 2, 00 indicates that the channel coding redundancy version RV of the transport block TB-PDS4 is 0, and 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS5 is 3.

Accordingly, the first field containing the first parameter and the second parameter is determined as: 01100011.

as shown in fig. 11b, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is an RV field. The first parameter and the second parameter each fill all bits of the first field continuously. The first parameter uses the first bits of the first field and the second parameter uses the last bits of the first field.

Assuming that the number N of transport blocks TB that one downlink control information DCI allows scheduling at most is 4, the bit number of the RV field is 4 bits, and correspondingly, the length RV _ bit _ total of the first field is determined to be 4 bits.

It is assumed that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI is 3.

Then, the first number M2 is equal to the length RV _ bit _ total of the first field-the number M of actually scheduled transport blocks TB is equal to RV _ bit _ total-M is equal to N-M is equal to 4-3 is equal to 1.

The second number M1 is the number M of actually scheduled transport blocks TB, the first number M2 is M- (N-M) 2M-N is 3-1 is 2.

Thus, the first number M2 of first parameters is determined as: 01; the second parameter of the second number M1 is determined as: 1. 0, in the first place. Wherein 01 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 1, 1 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 1, and 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0.

Accordingly, the first field containing the first parameter and the second parameter is determined as: 0110.

as shown in fig. 11c, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field comprises a RV field and reserved bits in an NDI field; the RV field and the NDI field belong to two different fields. The first parameter and the second parameter both continuously fill all bits of the first field. The second number M1 of second parameters uses the first bits in the RV field and the remaining ones of the first numbers M2 use the last bits in the RV field; the remaining ones of the first number M2 use the reserved bits in the NDI field.

Assuming that the number N of transport blocks TB allowed to be scheduled at most by one downlink control information DCI is 8, and assuming that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI is 6, the number of bits in the RV field is 8bits, and the reserved bits in the NDI field are N-M-8-6-2 bits, and correspondingly, the length RV _ bit _ total of the first field is determined to be N + (N-M) -8 + 2-10 bits.

Then, the first number M2 is equal to the length of the first field RV _ bit _ total — the number of actually scheduled transport blocks TB is equal to RV _ bit _ total-M is equal to N + (N-M) -M is equal to 2N-2M is equal to 10-6 is equal to 4.

The second number M1 is the number M of actually scheduled transport blocks TB — the first number M2 is M- (N-M) 2M-N is 6-4 is 2.

Thus, the first parameter of the first number M2 is determined as: 10. 00, 11, 01; the second parameter of the second number M1 is determined as: 0. 1. Wherein 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 0, 1 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 1, 10 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 2, 00 indicates that the channel coding redundancy version RV of the transport block TB-PDS4 is 0, 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS5 is 3, and 01 indicates that the channel coding redundancy version RV of the transport block TB-PDS6 is 2.

Accordingly, the RV field containing 3 first parameters and 2 second parameters is determined as: 01100011.

the NDI field containing the new data indication and 1 first parameter for 6 transport blocks, TBs, is determined as: 00101001.

as shown in fig. 11d, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field comprises a RV field and reserved bits in an NDI field; the RV field and the NDI field belong to two different fields. The first parameter and the second parameter each fill all bits of the first field continuously. The first parameter of the first number M2 uses all bits in the RV field; a second parameter of the second number M1 uses a reserved bit in the NDI field; the new data for indicating the transport block TB indicates that the first bits of the NDI field are used and the reserved bits use the last bits of the NDI field.

Assuming that the number N of transport blocks TB allowed to be scheduled at most by one downlink control information DCI is 4, and assuming that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI is 3, the number of bits in the RV field is 4 bits, and the reserved bit in the NDI field is N-M-4-3-1 bit, and correspondingly, the length RV _ bit _ total +(N-M) of the first field is determined to be 4+ 1-5 bits.

Then, the first number M2 is equal to the length of the first field RV _ bit _ total — the number of actually scheduled transport blocks TB is equal to RV _ bit _ total-M is equal to N + (N-M) -M is equal to 2N-2M is equal to 5-3 is equal to 2.

The second number M1 is the number M of actually scheduled transport blocks TB — the first number M2 is M- (N-M) 2M-N is 3-2 is 1.

Thus, the first number M2 of first parameters is determined as: 00. 10; the second parameter of the second number M1 is determined as: 0. wherein 00 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 0, 10 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 2, and 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0.

Accordingly, the RV field containing 2 first parameters is determined as: 0010.

the NDI field containing the new data indication of 3 transport blocks TB and 1 second parameter is determined as: 0010.

as shown in fig. 11e, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field comprises a RV field and reserved bits in an NDI field; the RV field and the NDI field belong to the same field; the NDI field uses the first bits of the same field and the RV field uses the last bits of the same field. The first parameter and the second parameter both continuously fill all bits of the first field. The first parameter of the first number M2 uses all bits in the RV field; a second parameter of the second number M1 uses a reserved bit in the NDI field; the new data for indicating the transport block TB indicates that the first bits of the NDI field are used and the reserved bits use the last bits of the NDI field.

Assuming that the number N of transport blocks TB allowed to be scheduled at most by one downlink control information DCI is 4, and assuming that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI is 3, the number of bits in the RV field is 4 bits, and the reserved bits in the NDI field are N-M-4-3-1 bits, and correspondingly, the length RV _ bit _ total _ N + (N-M) -bit of the first field is determined.

Thus, the first number M2 of first parameters is determined as: 00. 11; the second parameter of the second number M1 is determined as: 0. wherein 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 0, 00 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 0, and 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 3.

Accordingly, the RV field containing 2 first parameters is determined as: 0011.

the NDI field containing the new data indication of 3 transport blocks TB and 1 second parameter is determined as: 0110.

the above application scenarios are all applicable to the continuous filling mode, and an application scenario applicable to the discontinuous cross filling mode is listed below. Wherein the continuous filling manner and the discontinuous cross filling manner depend on an indication of downlink control information DCI configured by the base station.

As shown in fig. 11f, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is an RV field. The first parameter and the second parameter discontinuously cross-fill all bits of the first field.

Assuming that the number N of transport blocks TB that one downlink control information DCI allows scheduling at most is 4, the number of bits in the RV field is 4 bits, and correspondingly, the length RV _ bit _ total of the first field is determined to be 4 bits.

The second number M1 is the number M of actually scheduled transport blocks TB — the first number M2 is M- (N-M) 2M-N is 3-1 is 2.

Thus, the first parameter of the first number M2 is determined as: 01; the second parameter of the second number M1 is determined as: 1. 0, in the first place. Wherein, 1 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 1, 01 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 2, and 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0.

Correspondingly, based on the non-continuous cross-padding manner of the first parameter and the second parameter, the first field containing the first parameter and the second parameter is determined as follows: 1010.

the above application scenarios are all applicable to the single codeword scheduling mode, and an application scenario applicable to the multiple codeword scheduling mode is listed below. The single code word scheduling mode and the multiple code word scheduling mode depend on the indication of the downlink control information DCI configured by the base station.

As shown in fig. 11g, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is an RV field. The first parameter and the second parameter each fill all bits of the first field continuously. The second parameter uses the first bits of the first field and the first parameter uses the last bits of the first field.

Assuming that the number N of transport blocks TB that one downlink control information DCI allows scheduling at most is 4, the number of bits in the RV field is 4 × 2 — 8bits, and accordingly, the length RV _ bit _ total of the first field is determined to be 8 bits.

Assuming that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI is 2, the number M of actually scheduled transport blocks TB is 2 × 2 or 4 in the following calculation procedure based on the multiple codeword scheduling scheme.

Then, the first number M2 is equal to the length RV _ bit _ total of the first field-the number M of actually scheduled transport blocks TB is equal to RV _ bit _ total-M is equal to N-M is equal to 8-4 is equal to 4.

The second number M1 is the number M of actually scheduled transport blocks TB — the first number M2 is M- (N-M) 2M-N is 4-4 is 0.

Thus, the first number M2 of first parameters is determined as: 01. 10, 00 and 11. Wherein 01 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 1, 10 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 2, 00 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0, and 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS4 is 3.

Accordingly, a first field containing a first parameter is determined as: 01100011.

in the application scenarios, the filling position of each function field in the first field, the filling position of each parameter in the first field, and the filling position of the reserved bit in the first field are not limited to those described in the application scenarios, and any other suitable combination is allowed, which is not specifically limited herein.

Referring to fig. 12, in an embodiment of the present application, a data transmission method is provided, which can be executed by the terminal 110 in the implementation environment shown in fig. 1.

As shown in fig. 12, the method may include the steps of:

the first number and the second number are determined, step 62, depending on the length of the first field, to perform the data transmission based on the first number and/or the second number.

Wherein the first field is used for indicating the channel coding Redundancy Version (RV) of a transport block; the first number is used for indicating the number of transmission blocks using a first length indication channel Redundancy Version (RV), and the second number is used for indicating the number of transmission blocks using a second length indication channel Redundancy Version (RV); the first length is distinct from the second length.

Regarding the determination of the first quantity M2 and the second quantity M1, similarly to the base station side, reference may be made to the process of determining the first quantity M2 and the second quantity M1 at the base station side, and details are not repeated here.

Through the above process, the combining gain of the data HARQ retransmission can be facilitated when receiving data through the determination of the first number M2 and/or the second number M1.

The following are embodiments of the apparatus of the present application, which may be used to implement the data transmission method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to method embodiments of the data transmission method referred to in the present application.

Referring to fig. 13, in an embodiment of the present application, a data transmission apparatus 900 is provided and applied to a base station.

The data transmission apparatus 900 includes, but is not limited to: a quantity determination module 920.

The number determining module 920 is configured to determine the first number and the second number according to the length of the first field, so as to perform data transmission based on the first number and/or the second number.

Referring to fig. 14, in an embodiment of the present application, a data transmission apparatus 1000 is provided and applied to a terminal.

The data transmission device 1000 includes, but is not limited to: a quantity determination module 1020.

Wherein the number determining module 1020 is configured to determine the first number and the second number according to the length of the first field, so as to perform data transmission based on the first number and/or the second number.

It should be noted that, in the embodiment of the present application, the division of the unit and/or the module is schematic, and is only a logic function division, and another division manner may be available in actual implementation. In addition, functional units and/or modules in various embodiments of the present application may be integrated into one processing unit and/or module, or each unit and/or module may exist alone physically, or two or more units and/or modules may be integrated into one unit and/or module. The integrated unit and/or module may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit and/or module.

The integrated units and/or modules, if implemented in the form of software functional units and/or modules and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

In addition, the data transmission device and the data transmission method provided by the above embodiments are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not described again.

Therefore, the number of the channel coding redundancy versions RV is increased through the determination of the first number M2 and/or the second number M1, and the combining gain of the data HARQ retransmission is increased along with the increase of the channel coding redundancy versions RV, so that the problem of large combining gain loss of the data HARQ retransmission in the related art is solved.

Fig. 15 is a block diagram illustrating a base station in accordance with an example embodiment. The base station is suitable for the base station 130 of the implementation environment shown in fig. 1.

As shown in fig. 15, the base station 1100 at least includes: a processor 1110, a memory 1120, and a transceiver 1130.

Among other things, the transceiver 1130 receives and transmits data under the control of the processor 1110.

In FIG. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1110, and various circuits, represented by the memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1130 may be a number of elements including a transmitter and receiver that provide a unit and/or module for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like.

The processor 1110 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1110 in performing operations.

Alternatively, the processor 1110 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also adopt a multi-core architecture. The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Fig. 16 is a block diagram illustrating a structure of a terminal according to an exemplary embodiment. The terminal is adapted to the terminal 110 of the embodiment shown in fig. 1.

As shown in fig. 16, the terminal 1300 includes at least: a processor 1310, a memory 1320, and a transceiver 1330.

The transceiver 1330 for receiving and transmitting data under the control of the processor 1310.

In fig. 16, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1310, and various circuits, represented by memory 1320, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1330 may be a plurality of elements including a transmitter and a receiver that provide a means and/or module for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. The user interface 1340 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1310 in performing operations.

Optionally, the processor 1310 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture. The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

In addition, a storage medium is provided in the embodiments of the present application, and a computer program is stored on the storage medium, and when being executed by a processor, the computer program realizes the data transmission method in the embodiments. The storage medium may be any available media or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

The embodiment of the application provides a program product, for example, the program product is an FPGA chip or a DSP chip, and the program product includes executable instructions, and the executable instructions are stored in a storage medium. The processor reads the executable instructions from the storage medium, so that the executable instructions when executed by the processor implement the data transmission method in the above embodiments.

Compared with the related art, the number of the channel coding redundancy versions RV is increased through the determination of the first number M2 and/or the second number M1, and the combining gain of the data HARQ retransmission is increased along with the increase of the channel coding redundancy versions RV, so that the problem of large combining gain loss of the data HARQ retransmission in the related art is solved.

Meanwhile, the second number M1 is determined in response to the determination of the first number M2, so that the information length indicated by the used channel coding redundancy versions of different transport blocks is dynamically adjustable, the combining gain of data HARQ retransmission can be increased, excessive overhead cannot be generated in downlink control information DCI, and the improvement of the receiving performance is facilitated.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of execution is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A method of data transmission, the method comprising:

determining a first number and a second number according to the length of a first field to perform data transmission based on the first number and/or the second number;

2. The method of claim 1, wherein determining the first number and the second number based on a length of the first field comprises:

determining the length of the first field and the number of actually scheduled transmission blocks;

determining the first number according to the length of the first field and the number of actually scheduled transmission blocks;

and determining the second quantity according to the first quantity and the number of the actually scheduled transmission blocks.

3. The method of claim 2, wherein said determining the first number based on the length of the first field and the number of actually scheduled transport blocks comprises:

determining a first difference value between the length of the first field and the number of actually scheduled transmission blocks;

and determining the first number according to the relation between the first difference value and the number of the actually scheduled transmission blocks.

4. The method of claim 3, wherein said determining said first number based on a relationship between said first difference and a number of actually scheduled transport blocks comprises:

if the first difference is larger than the number of the transmission blocks which are actually scheduled, taking the number of the transmission blocks which are actually scheduled as the first number;

and if the first difference is less than or equal to the number of the actually scheduled transmission blocks, taking the first difference as the first number.

5. The method of claim 2, wherein said determining the second number based on the first number and the number of actually scheduled transport blocks comprises:

determining a second difference between the number of actually scheduled transport blocks and the first number;

taking the second difference as the second number.

6. The method of claim 1, wherein the first number of parameters indicating channel coding redundancy versions, RV, and/or the second number of parameters indicating channel coding redundancy versions, RV, continuously fills the first field.

7. The method of claim 1, wherein the first number of parameters indicative of channel coding redundancy version, RV, and/or the second number of parameters indicative of channel coding redundancy version, RV, non-contiguously cross-fills the first field.

8. The method according to one of claims 1 to 7, wherein the first field is included in downlink control information.

9. The method of claim 8, wherein the first field comprises a channel coding redundancy version, RV, field for indicating RV, of a transport block and/or reserved bits in the downlink control information.

10. The method of claim 9, wherein the reserved bits in the downlink control information comprise at least reserved bits in a New Data Indication (NDI) field for indicating new data.

11. The method of claim 10, wherein a number of bits reserved in the NDI field is determined according to a number of actually scheduled transport blocks.

12. A communication device, comprising: a memory, a transceiver, and a processor;

wherein the memory is to store a computer program; the transceiver is used for transceiving data under the control of the processor; the processor is used for reading the computer program in the memory and executing the following steps:

13. The communications device of claim 12, wherein the processor is further configured to perform the step of:

14. The communications device of claim 13, wherein the processor is further configured to perform the steps of:

15. The communications device of claim 14, wherein the processor is further configured to perform the steps of:

16. The communications device of claim 13, wherein the processor is further configured to perform the steps of:

taking the second difference as the second number.

17. A data transmission apparatus, characterized in that the apparatus comprises:

a number determination module for determining a first number and a second number according to a length of a first field to perform data transmission based on the first number and/or the second number;

wherein the first field is used for indicating a channel coding Redundancy Version (RV) of a transport block; the first number is used for indicating the number of transmission blocks using a first length indication channel Redundancy Version (RV), and the second number is used for indicating the number of transmission blocks using a second length indication channel Redundancy Version (RV); the first length is distinct from the second length.

18. A storage medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the data transmission method according to any one of claims 1 to 11.